I think they are called oct codes you enter with the numeric pad and ALT key
Here are the extended ones below.
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I remember I had a program that made ASCII fonts out of the codes search the web for ASCII art
Code:
_____
,----/,--. `.
/ '. `-' \
| ____ \ '`|_
\'.--._/` _ \ '.
/'-|/ \|`\|-` \
/ / \ |
| ; '` | .'
'. |;; ; /
\ \ ; / ,'
;--, .,--,
mx__||=|=|./|=|=||___
`'-'-' `-'-'`
___________________________
/'/ / \ \ \
/ '.'; ; \ ' \
'-/ | ; | ; \-'
\_| | | |_/
`-'\_/`-'
I use to know these of by heart when I was programming in dos using Quick Basic. oh that brings back memory's the good old days of computing